ID   NUSB_ACAM1              Reviewed;         205 AA.
AC   B0C5Q2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   26-FEB-2008, sequence version 1.
DT   25-MAY-2022, entry version 76.
DE   RecName: Full=Transcription antitermination protein NusB {ECO:0000255|HAMAP-Rule:MF_00073};
DE   AltName: Full=Antitermination factor NusB {ECO:0000255|HAMAP-Rule:MF_00073};
GN   Name=nusB {ECO:0000255|HAMAP-Rule:MF_00073}; OrderedLocusNames=AM1_3786;
OS   Acaryochloris marina (strain MBIC 11017).
OC   Bacteria; Cyanobacteria; Synechococcales; Acaryochloridaceae;
OC   Acaryochloris.
OX   NCBI_TaxID=329726;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MBIC 11017;
RX   PubMed=18252824; DOI=10.1073/pnas.0709772105;
RA   Swingley W.D., Chen M., Cheung P.C., Conrad A.L., Dejesa L.C., Hao J.,
RA   Honchak B.M., Karbach L.E., Kurdoglu A., Lahiri S., Mastrian S.D.,
RA   Miyashita H., Page L., Ramakrishna P., Satoh S., Sattley W.M., Shimada Y.,
RA   Taylor H.L., Tomo T., Tsuchiya T., Wang Z.T., Raymond J., Mimuro M.,
RA   Blankenship R.E., Touchman J.W.;
RT   "Niche adaptation and genome expansion in the chlorophyll d-producing
RT   cyanobacterium Acaryochloris marina.";
RL   Proc. Natl. Acad. Sci. U.S.A. 105:2005-2010(2008).
CC   -!- FUNCTION: Involved in transcription antitermination. Required for
CC       transcription of ribosomal RNA (rRNA) genes. Binds specifically to the
CC       boxA antiterminator sequence of the ribosomal RNA (rrn) operons.
CC       {ECO:0000255|HAMAP-Rule:MF_00073}.
CC   -!- SIMILARITY: Belongs to the NusB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00073}.
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DR   EMBL; CP000828; ABW28773.1; -; Genomic_DNA.
DR   RefSeq; WP_012164148.1; NC_009925.1.
DR   AlphaFoldDB; B0C5Q2; -.
DR   SMR; B0C5Q2; -.
DR   STRING; 329726.AM1_3786; -.
DR   EnsemblBacteria; ABW28773; ABW28773; AM1_3786.
DR   KEGG; amr:AM1_3786; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_0_0_3; -.
DR   OMA; KPQQIAR; -.
DR   OrthoDB; 1574817at2; -.
DR   Proteomes; UP000000268; Chromosome.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006353; P:DNA-templated transcription, termination; IEA:UniProtKB-UniRule.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IEA:InterPro.
DR   GO; GO:0031564; P:transcription antitermination; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.940.10; -; 1.
DR   HAMAP; MF_00073; NusB; 1.
DR   InterPro; IPR035926; NusB-like_sf.
DR   InterPro; IPR011605; NusB_fam.
DR   InterPro; IPR006027; NusB_RsmB_TIM44.
DR   PANTHER; PTHR11078; PTHR11078; 1.
DR   Pfam; PF01029; NusB; 1.
DR   SUPFAM; SSF48013; SSF48013; 1.
DR   TIGRFAMs; TIGR01951; nusB; 1.
PE   3: Inferred from homology;
KW   Reference proteome; RNA-binding; Transcription;
KW   Transcription antitermination; Transcription regulation.
FT   CHAIN           1..205
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_1000075175"
SQ   SEQUENCE   205 AA;  22974 MW;  40D97CC581EADF79 CRC64;
     MQPRRIAREL ALLSIGQLPS NSDRLANQDL QAVMITAVRT LVAEVQEALE TASAELKRGS
     DRILDSELKA IDVQSSRAMV TEAIDLTKTA VNRLGLAIDF PEFIQLANQQ SVRDYTLDLI
     GAVHHHRDEI DQILETSLVD WQLHRLAHID ANLLRLAVAE MKYLDIPNQV AINESVELAK
     KYSAEEGHRF INGVLRRVTR QIAVP